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contracts...newNodes.sol

// SPDX-License-Identifier: MIT
pragma solidity 0.6.0;

import "hardhat/console.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
import "./BasicMetaTransaction.sol";


contract newNodes is BasicMetaTransaction {
    
    address payable public Owner;
    
    using Counters for Counters.Counter;
    Counters.Counter public _countTotalNode;


    struct _Nodes{
        uint256 nodeId;
        address nodeAdd;
        uint256 diskSize;
        string  latitude;
        string  longitude;
        string  altitude;
        string  time;
    }

    mapping(uint256 => _Nodes) nodes;


    constructor() public {
        Owner = payable(msg.sender); 
    }

    modifier onlyOwner {
      require(msg.sender == Owner);
      _;
   }


    function newNode(uint256 _nodeId, address _nodeAdd, uint256 _diskSize, string _latitude, string _longitude, string _altitude, string _time) public {
        _countTotalNode.increment();
        uint countTotalNode = _countTotalNode.current();
        
        nodes[countTotalNode].nodeId = _nodeId;
        nodes[countTotalNode].nodeAdd =  _nodeAdd;
        nodes[countTotalNode].diskSize =  _diskSize;

        geoLocation(_latitude, _longitude, _altitude);
        time(_time);
    }

    function geoLocation(string _latitude, string _longitude, string _altitude) public {
        
        uint countTotalNode = _countTotalNode.current();

        nodes[countTotalNode].latitude = _latitude;
        nodes[countTotalNode].longitude = _longitude;
        nodes[countTotalNode].altitude = _altitude;
    }

    function timeStamp(string _time) public {
        uint countTotalNode = _countTotalNode.current();

        nodes[countTotalNode].time = _time;
    }

    function getNodeDetails(uint256 _nodeId) public view returns(address, uint256){
        return (nodes[_nodeId].nodeAdd, nodes[_nodeId].diskSize); 
    }
}